TY - JOUR
T1 - The effect of situational factors on hand preferences for feeding in 177 captive chimpanzees (Pan troglodytes)
AU - Hopkins, William D.
AU - Fernaández-Carriba, Samuel
N1 - Funding Information:
This research was supported by NIH grants NS-29574, NS-36605 and RR-00165 to the Yerkes Regional Primate Research Center. Support for SFC was provided by F.P.U. grants AP96-201948 and DGES PB95-0246 from the Spanish Ministry of Education. We thank Dr Angela Loeches and Dr Susana Sánchez for helpful comments on the paper. The Yerkes Center is fully accredited by the American Association for Accreditation of Laboratory Animal Care. APA guidelines for the ethical treatment of animals were adhered to during all aspects of this study.
PY - 2000
Y1 - 2000
N2 - This study examined the effect of situational factors on hand use for feeding in a sample of captive chimpanzees. Lateral bias in hand use was tested in biased and unbiased testing circumstances to assess strength and consistency in hand preference. For both unbiased and biased testing conditions, population-level right hand preferences were found for the sample. In the biased condition, subjects were more likely to overcome positional factors in order to feed with their right hand contrasted with the left. Overall, hand use in the biased and unbiased testing conditions was significantly positively correlated. In terms of strength of hand use, juveniles were found to be less lateralized than sub-adults and adults. Moreover, juvenile females were found to be more lateralized than juvenile males. Taken together, the data suggest that chimpanzee hand preferences for feeding are not constrained by situational factors and are relatively consistent in biased and unbiased testing conditions. Copyright (C) 2000 Elsevier Science Ltd.
AB - This study examined the effect of situational factors on hand use for feeding in a sample of captive chimpanzees. Lateral bias in hand use was tested in biased and unbiased testing circumstances to assess strength and consistency in hand preference. For both unbiased and biased testing conditions, population-level right hand preferences were found for the sample. In the biased condition, subjects were more likely to overcome positional factors in order to feed with their right hand contrasted with the left. Overall, hand use in the biased and unbiased testing conditions was significantly positively correlated. In terms of strength of hand use, juveniles were found to be less lateralized than sub-adults and adults. Moreover, juvenile females were found to be more lateralized than juvenile males. Taken together, the data suggest that chimpanzee hand preferences for feeding are not constrained by situational factors and are relatively consistent in biased and unbiased testing conditions. Copyright (C) 2000 Elsevier Science Ltd.
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U2 - 10.1016/S0028-3932(99)00092-5
DO - 10.1016/S0028-3932(99)00092-5
M3 - Article
C2 - 10683391
AN - SCOPUS:0343986461
SN - 0028-3932
VL - 38
SP - 403
EP - 409
JO - Neuropsychologia
JF - Neuropsychologia
IS - 4
ER -